Abstract
Intravenous lipid constituents have different effects on various biological processes. Some of these effects are protective, while others are potentially adverse. Phytosterols, in particular, seem to be implicated with parenteral nutrition-associated cholestasis. The aim of this study is to determine the amount of plant and animal sterols present in lipid formulations derived from different oil sources. To this end, animal (cholesterol) and plant (β-sitosterol, campesterol, and stigmasterol) sterols in seven different commercially available intravenous lipid emulsions (ILEs) were quantified by capillary gas chromatography after performing a lipid extraction procedure. The two major constituents of the lipid emulsions were cholesterol (range 14–57% of total lipids) and β-sitosterol (range 24–55%), followed by campesterol (range 8–18%) and stigmasterol (range 5–16%). The fish oil-derived formulation was an exception, as it contained only cholesterol. The mean values of the different sterols were statistically different across ILEs (P = 0.0000). A large percentage of pairwise comparisons were also statistically significant (P = 0.000), most notably for cholesterol and stigmasterol (14 out of 21 for both), followed by campesterol (12 out 21) and β-sitosterol (11 out 21). In conclusion, most ILEs combined significant amounts of phytosterols and cholesterol. However, their phytosterols:cholesterol ratios were reversed compared to the normal human diet.
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Abbreviations
- ILEs:
-
Intravenous lipid emulsions
- TPN:
-
Total parenteral nutrition
- PNAC:
-
Parenteral nutrition-associated cholestasis
- LCT:
-
Long-chain triglycerides
- MCT:
-
Medium-chain triglycerides
- GC:
-
Gas chromatography
- cGC:
-
Capillary gas chromatography
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Acknowledgments
We are particularly grateful to Dr. Maria Rodriguez Estrada and Mr Stefano Savioli at the Food Science Department directed by Prof. Lerker, University of Bologna, for their expertise and technical assistance offered for accurate laboratory determinations.
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Forchielli, M.L., Bersani, G., Tala, S. et al. The Spectrum of Plant and Animal Sterols in Different Oil-Derived Intravenous Emulsions. Lipids 45, 63–71 (2010). https://doi.org/10.1007/s11745-009-3371-x
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DOI: https://doi.org/10.1007/s11745-009-3371-x